/*立方体*/
#li-fang-rong-qi {
	position: fixed;
	left: 5rem;
	top: 25rem;
	perspective: 50rem;
	z-index: 200;
}

#li-fang {
	width: 6.25rem;
	height: 6.25rem;
	transform-style: preserve-3d;
	position: relative;
	animation: li-fang 6s infinite linear;
}

@keyframes li-fang {
	0% {
		transform: rotate3d(1, 1, 0, 0deg);
	}

	100% {
		transform: rotate3d(1, 1, 0, 360deg);
	}
}

.li-fang-tu {
	width: 6.25rem;
	height: 6.25rem;
	position: absolute;
	backface-visibility: visible;
	box-shadow: 0 0 0.75rem rgba(0, 170, 255, .3);
}

.tu1 {
	transform: translateZ(3.125rem);
}

.tu2 {
	transform: rotateY(180deg) translateZ(3.125rem);
}

.tu3 {
	transform: rotateY(90deg) translateZ(3.125rem);
}

.tu4 {
	transform: rotateY(-90deg) translateZ(3.125rem);
}

.tu5 {
	transform: rotateX(90deg) translateZ(3.125rem);
}

.tu6 {
	transform: rotateX(-90deg) translateZ(3.125rem);
}